Aaas
[American Association for the Advancement of Science 的缩略]美国科学发展协会, [American Academy of Arts and Sciences的缩略]美国科学艺术研究院
🗣️ 情景例句
I hear the exams will be very tough.
我听说考试挺难的。
Please excuse me for a little while.I want to do something.
请等我一会儿时间，我要做点事。
We need seven of these.
我们要七个这种的。